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FWIW, many CC systems say do not use them on hilly, curvy roads, or on slippery surfaces. 


100-years ago, southern New Hampshire was mostly farms.  Very few today.  It used to be a few patches of trees and fields but today, it's about 98% trees outside of a town.  The i3 doesn't like the deep shade, sunny spots when there are trees along the road.  It's okay if it's totally in shade, or totally in sun (unless the angle is into the camera), but isn't great under some circumstances.


It should be fairly easy to tell if the i3 is going to stop for an obstruction as there either will or won't be a symbol of a vehicle on the driver's display.  If you notice you're coming up to a stopped vehicle, and you weren't following it (as indicated in the display), it's best to just manually disengage the CC and coast to your stop, or resume, if that is the best choice.  As was mentioned, the original implementation of the software had significantly higher peak regeneration, and, there was no delay.  The ACC is not self-driving.  You have to be paying attention.


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